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7.5 KiB
Solidity

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./optimize/SlotHelper.sol";
import "./StorageHelperV2.sol";
import "./StorageSlotSelfDestructableV2.sol";
// Large storage manager to support arbitrarily-sized data with multiple chunk
contract LargeStorageManagerV2 {
using SlotHelper for bytes32;
using SlotHelper for address;
uint8 internal constant SLOT_LIMIT = 0;
mapping(bytes32 => mapping(uint256 => bytes32)) internal keyToMetadata;
mapping(bytes32 => mapping(uint256 => mapping(uint256 => bytes32)))
internal keyToSlots;
function isOptimize() public pure returns (bool) {
return SLOT_LIMIT > 0;
}
function _preparePut(bytes32 key, uint256 chunkId) private {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0)) {
require(
chunkId == 0 || keyToMetadata[key][chunkId - 1] != bytes32(0x0),
"must replace or append"
);
}
if (!metadata.isInSlot()) {
address addr = metadata.bytes32ToAddr();
if (addr != address(0x0)) {
// remove the KV first if it exists
StorageSlotSelfDestructableV2(addr).destruct();
}
}
}
function _putChunkFromCalldata(
bytes32 key,
uint256 chunkId,
bytes calldata data,
uint256 value
) internal {
_preparePut(key, chunkId);
// store data and rewrite metadata
if (data.length > SLOT_LIMIT) {
keyToMetadata[key][chunkId] = StorageHelperV2
.putRawFromCalldata(data, value)
.addrToBytes32();
} else {
keyToMetadata[key][chunkId] = SlotHelper.putRaw(
keyToSlots[key][chunkId],
data
);
}
}
function _putChunk(
bytes32 key,
uint256 chunkId,
bytes memory data,
uint256 value
) internal {
_preparePut(key, chunkId);
// store data and rewrite metadata
if (data.length > SLOT_LIMIT) {
keyToMetadata[key][chunkId] = StorageHelperV2
.putRaw(data, value)
.addrToBytes32();
} else {
keyToMetadata[key][chunkId] = SlotHelper.putRaw(
keyToSlots[key][chunkId],
data
);
}
}
function _getChunkAddr(
bytes32 key,
uint256 chunkId
) internal view returns (address) {
bytes32 metadata = keyToMetadata[key][chunkId];
address addr = metadata.bytes32ToAddr();
return addr;
}
function _getChunk(
bytes32 key,
uint256 chunkId
) internal view returns (bytes memory, bool) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata.isInSlot()) {
bytes memory res = SlotHelper.getRaw(
keyToSlots[key][chunkId],
metadata
);
return (res, true);
} else {
address addr = metadata.bytes32ToAddr();
return StorageHelperV2.getRaw(addr);
}
}
function _stakeTokens(
bytes32 key,
uint256 chunkId
) internal view returns (uint256) {
uint256 stakeNum = 0;
while (true) {
(uint256 count, bool found) = _chunkStakeTokens(key, chunkId);
if (!found) {
return stakeNum;
}
stakeNum += count;
chunkId++;
}
return stakeNum;
}
function _chunkStakeTokens(
bytes32 key,
uint256 chunkId
) internal view returns (uint256, bool) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0)) {
return (0, false);
} else if (metadata.isInSlot()) {
return (0, true);
} else {
address addr = metadata.bytes32ToAddr();
return (addr.balance, true);
}
}
function _chunkSize(
bytes32 key,
uint256 chunkId
) internal view returns (uint256, bool) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0)) {
return (0, false);
} else if (metadata.isInSlot()) {
uint256 len = metadata.decodeLen();
return (len, true);
} else {
address addr = metadata.bytes32ToAddr();
return StorageHelperV2.sizeRaw(addr);
}
}
function _countChunks(bytes32 key) internal view returns (uint256) {
uint256 chunkId = 0;
while (true) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0x0)) {
break;
}
chunkId++;
}
return chunkId;
}
// Returns (size, # of chunks).
function _size(bytes32 key) internal view returns (uint256, uint256) {
uint256 size = 0;
uint256 chunkId = 0;
while (true) {
(uint256 chunkSize, bool found) = _chunkSize(key, chunkId);
if (!found) {
break;
}
size += chunkSize;
chunkId++;
}
return (size, chunkId);
}
function _get(bytes32 key) internal view returns (bytes memory, bool) {
(uint256 size, uint256 chunkNum) = _size(key);
if (chunkNum == 0) {
return (new bytes(0), false);
}
bytes memory data = new bytes(size); // solidity should auto-align the memory-size to 32
uint256 dataPtr;
assembly {
dataPtr := add(data, 0x20)
}
for (uint256 chunkId = 0; chunkId < chunkNum; chunkId++) {
bytes32 metadata = keyToMetadata[key][chunkId];
uint256 chunkSize = 0;
if (metadata.isInSlot()) {
chunkSize = metadata.decodeLen();
SlotHelper.getRawAt(
keyToSlots[key][chunkId],
metadata,
dataPtr
);
} else {
address addr = metadata.bytes32ToAddr();
(chunkSize, ) = StorageHelperV2.sizeRaw(addr);
StorageHelperV2.getRawAt(addr, dataPtr);
}
dataPtr += chunkSize;
}
return (data, true);
}
// Returns # of chunks deleted
function _remove(bytes32 key, uint256 chunkId) internal returns (uint256) {
while (true) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0x0)) {
break;
}
if (!metadata.isInSlot()) {
address addr = metadata.bytes32ToAddr();
// remove new contract
StorageSlotSelfDestructableV2(addr).destruct();
}
keyToMetadata[key][chunkId] = bytes32(0x0);
chunkId++;
}
return chunkId;
}
function _removeChunk(
bytes32 key,
uint256 chunkId
) internal returns (bool) {
bytes32 metadata = keyToMetadata[key][chunkId];
if (metadata == bytes32(0x0)) {
return false;
}
if (keyToMetadata[key][chunkId + 1] != bytes32(0x0)) {
// only the last chunk can be removed
return false;
}
if (!metadata.isInSlot()) {
address addr = metadata.bytes32ToAddr();
// remove new contract
StorageSlotSelfDestructableV2(addr).destruct();
}
keyToMetadata[key][chunkId] = bytes32(0x0);
return true;
}
}